Page 164 - statbility for masters and mates

152 Ship Stability for Masters and Mates
Required draft aft 6:2 m II Equations (I)x(II) Reduction required 0:1 m w cm
15
10 cm w cm 15
w
10 15 cm III
(b) Shift `w' tonnes from the centre of ¯otation to the forepeak tank
Change of trim
60w
w d MCT 1cm
Change of trim Change of draft aft due to trim
200
3w cm by the head 10
Change of draft aft due to trim But change of draft required aft
0:147w
2:205w 1:205w w
Therefore by loading 124.5 reduced to 6.2 metres.
Ll Change of trim 73:5 3w
150 10
0:147w cm IV
w
10 15 cm as per equation (III)
10 w ; i.e. equation (IV) equation (III). 15
150 w
150
124:5 tonnes
tonnes in the forepeak tank the draft aft will be
(c) To ®nd the new draft forward
Bodily sinkage w TPC
124.5 15